Home / 31,719.90-43,775.24-18,111.96

Finding the Fourth Proportional to 31,719.90, 43,775.24 and 18,111.96

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Solution

The fourth proportional to 31,719.90, 43,775.24 and 18,111.96 is: 24,995.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.90 : 43,775.24 = 18,111.96 : x
  2. Step 2: Convert to fraction form
    31,719.90/43,775.24 = 18,111.96/x
  3. Step 3: Cross multiply
    31,719.90x = 43,775.24 × 18,111.96
  4. Step 4: Simplify right side
    31,719.90x = 792,855,305.31
  5. Step 5: Solve for x
    x = 792,855,305.31/31,719.90
  6. Step 6: Final answer
    x = 24,995.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.